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Finding the Fourth Proportional to 646.08, 962.99 and 628.76

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Solution

The fourth proportional to 646.08, 962.99 and 628.76 is: 937.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    646.08 : 962.99 = 628.76 : x
  2. Step 2: Convert to fraction form
    646.08/962.99 = 628.76/x
  3. Step 3: Cross multiply
    646.08x = 962.99 × 628.76
  4. Step 4: Simplify right side
    646.08x = 605,491.21
  5. Step 5: Solve for x
    x = 605,491.21/646.08
  6. Step 6: Final answer
    x = 937.18

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.